How to use pure CSS to achieve a diamond-shaped loader effect (source code attached)

The content of this article is about how to use pure CSS to achieve the diamond-shaped loader effect (source code attached). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you. .

Effect preview

Source code download

https://github.com/comehope/front-end-daily -challenges

Code Interpretation

Define dom, a container contains 9 sub-elements:

<div>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
</div>

Centered display:

body {
  margin: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: black;
}

Define container and sub-element size, It is a large square containing 9 small squares:

.loader {
    width: 10em;
    height: 10em;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-gap: 0.5em;
}

Adjust the pattern to a large rhombus containing 9 small rhombuses:

.loader {
    transform: rotate(45deg);
}

Taking the vertical small rhombus as the unit, it is a small rhombus Block coloring:

.loader span {
    background-color: var(--c);
}

.loader span:nth-child(7) {
    --c: tomato;
}

.loader span:nth-child(4),
.loader span:nth-child(8) {
    --c: gold;
}

.loader span:nth-child(1),
.loader span:nth-child(5),
.loader span:nth-child(9) {
    --c: limegreen;
}

.loader span:nth-child(2),
.loader span:nth-child(6) {
    --c: dodgerblue;
}

.loader span:nth-child(3) {
    --c: mediumpurple;
}

Define the animation effect:

.loader span {
    animation: blinking 2s linear infinite;
    animation-delay: var(--d);
    transform: scale(0);
}

@keyframes blinking {
    0%, 100% {
        transform: scale(0);
    }

    40%, 80% {
        transform: scale(1);
    }
}

Finally, set the time delay for the small diamond to enhance the dynamic:

.loader span:nth-child(7) {
    --d: 0s;
}

.loader span:nth-child(4),
.loader span:nth-child(8) {
    --d: 0.2s;
}

.loader span:nth-child(1),
.loader span:nth-child(5),
.loader span:nth-child(9) {
    --d: 0.4s;
}

.loader span:nth-child(2),
.loader span:nth-child(6) {
    --d: 0.6s;
}

.loader span:nth-child(3) {
    --d: 0.8s;
}

You’re done!

The above is the detailed content of How to use pure CSS to achieve a diamond-shaped loader effect (source code attached). For more information, please follow other related articles on the PHP Chinese website!